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A spaceship travels at constant velocity from Earth to a point 745 ly away as measured in Earth's rest frame. The ship's speed relative to Earth is 0.9996c. A passenger is 29 yr old when departing from Earth.

(a) How old is the passenger when the ship reaches its destination, as measured by the ship's clock?

____years old

(b) If the spaceship sends a radio signal back to Earth as soon as it reaches its destination, in what year, by Earth's calendar, does the signal reach Earth? The spaceship left Earth in the year 2000.

____

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